# Questions on Algebra: Polynomials, rational expressions and equations answered by real tutors!

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 Algebra: Polynomials, rational expressions and equations Solvers Lessons Answers archive Quiz In Depth

 Question 541899: Simplify & Solve rational expression x^2-6x-27 divided by x^2-18x-81 multiplied by x^2+8x+16/ dvided by x^2+7x+12 Simplify & solve 16-2x divided by 10x multiplied by 5x^2 divided by 8-x Simplify & solve 3x^2-29x-10/x^2-100 Click here to see answer by friesr(113)

 Question 541722: I need to find the circumference of a circle that has a diameter of 16 inches if pi=3.1415, I am not understanding what pi is ? Click here to see answer by friesr(113)

 Question 541651: what is the number when it is subtracted from its square and the result is 72? Click here to see answer by friesr(113)

 Question 541492: Factor completely: Please give details as to what you are doing on each step. --- --- Here is what i have done so far but not sure if i am on the right track: --- --- That is as far as i have made it. Click here to see answer by friesr(113)

 Question 542246: How do I factor w^2+2w+4? I have tried to (w+ ) (w+ ) but I cannot find what would multiply to 4 but add to 2. Click here to see answer by Alan3354(30993)

 Question 542302: How do I simplify the following expression? 3.) (7x + 7) - (11x + 13) Click here to see answer by friesr(113)

 Question 542303: How do I simplify the following expression? 4.) (11x + 17) - (14x + 18) Click here to see answer by friesr(113)

 Question 542305: How do I simplify the following expression? 5.) (6x)(11x + 9) Click here to see answer by friesr(113)

 Question 542229: Origional Problem: - I factored out - I combined some terms and factored some more. - Now is where i am unsure. Can you help me complete this? Click here to see answer by friesr(113)

 Question 542451: What is the numerical coefficient of x^27 in the complete expansion of (x^2 + 5x + 2)^5 . (x^2 - 7x + 3)^9. Click here to see answer by Edwin McCravy(8909)

 Question 542499: Assume that y varies inversely as x. If y = -6 when x = -2, find y when x = 5. Answer Click here to see answer by mananth(12270)

 Question 542840: Simplify (x + 7) − (4x − 2) Multiply and Simplify (x − 4) (x + 2) Click here to see answer by rfer(12662)

 Question 542920: Question: FInd two consecutive even integers whose products is 168. the equation i set up was n+(n+1)=168, is that right? i don't know what to do from there if it is. Click here to see answer by scott8148(6628)

 Question 543043: . How do I find the zeros ? Click here to see answer by ankor@dixie-net.com(15656)

 Question 543130: factor 2x^4 + 5x^3 + 10x^2 + 20x + 8 Click here to see answer by IFY(62)

 Question 543221: Is this correct?8^-3=1/512 this is how i arrive at the answer 8*8=64*8=512 so 8^-3=1/512 or 1/8^3? which is correct? Click here to see answer by nerdybill(6962)

 Question 543347: Factor the follwing polynomials. 1) 14x^2y + 4xy^2 + 2xy i think it is 2xy(7x+2y) Click here to see answer by umnikmo(75)

 Question 543784: Is this equation correct? (x y)^3 =x y^3 explain why. If correct prove it and if incorrect what should be done to make it correct? Click here to see answer by stanbon(57361)